Remflex SB Chevy 18-Deg. Header Gasket Set 913012 5:1 (nominal)

5:1 (nominal)

Idle mixture screws

The dual-plane constant cross-sectional area design builds low and mid-range acceleration while optimized runner paths make exceptional top-end horsepower

3/8 in Valve Stem

* SA105 uses a 4x6 fill plate

Remflex SB Chevy 18-Deg. Header Gasket Set 913012 5:1 (nominal)Product Description: Exhaust Header Manifold Gasket 2 x 1. 875 in Round Port Graphite 18 Degree Small Block Chevy Pair Remflex gaskets are made from a unique graphite material that creates a tight seal ever time. These gaskets are available for many OE and custom applications. Remflex's unique flexible graphite material has been proven for more than 30 years in industrial applications, where temperatures routinely exceed 2,000 degrees day after day,